US2014294695A1PendingUtilityA1
Injector mixer for a compact gasification reactor system
Est. expiryMay 31, 2031(~4.8 yrs left)· nominal 20-yr term from priority
F23D 1/00B01F 25/30C10J 2200/152C10J 3/506F23D 1/005B01F 5/04
54
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Claims
Abstract
An injector mixer for a gasification reactor system that utilizes reactants includes an injector body that extends between a first face and a second face. The injector body includes a first passage that extends between the first face and the second face and has a first central axis. At least one second, impinging passage extends between the first face and second face and has an associated second central axis that has an angle with the first axis. The angle satisfies mixing efficiency Equation (I) disclosed herein.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . An injector mixer for a gasification reactor system, the injector mixer comprising:
an injector body extending between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle (θ) with the first axis, wherein the angle θ satisfies mixing efficiency Equation (I):
2
≤
2
sin
θ
(
m
.
stox
m
.
fuel
)
2
(
ρ
fuel
ρ
stox
)
(
A
fuel
A
stox
)
3.1
≤
7
Eq
.
(
I
)
where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of a stream of the fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage; and
wherein the angle (θ) is not equal to 30°.
2 . The injector mixer as recited in claim 1 , wherein the fuel mixture is a dual-phase mixture that includes solid particulate material and a carrier gas such that the density of the stream of fuel is according to Equation (II):
ρ fuel =ε ρ cg +(1−ε)ρ s Eq. (II)
where ε is a predetermined void volume fraction of the fuel material; ρ s is the true solids density inherent in the fuel material; and ρ cg is the density inherent in the carrier gas.
3 . The injector mixer as recited in claim 1 , wherein the at least one second passage includes four second passages that are circumferentially arranged around the first passage.
4 . The injector mixer as recited in claim 1 , wherein the angle is less than 30°.
5 . The injector mixer as recited in claim 1 , wherein the injector body comprises a circular plate and the first face and the second face lie in parallel planes.
6 . The injector mixer as recited in claim 1 , wherein the first passage and the plurality of second passages comprise respective tubes that extend through the injector body.
7 . The injector mixer as recited in claim 1 , including a point in space beyond the first face at which the first axis and the second axes intersect, and the point is at a distance of greater than 1.94 inches/4.93 centimeters from the first face.
8 . The injector mixer as recited in claim 1 , wherein the area ratio A fuel /A stox is from 1 to 2.
9 . The injector mixer as recited in claim 8 , wherein the area ratio A fuel /A stox is 1.33.
10 . A gasification reactor system including an injector mixer that is operable to provide reactants, the injector mixer including an injector body extending between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second central axis that has an angle (θ) with the first axis, wherein the angle θ satisfies mixing efficiency Equation (I):
2
≤
2
sin
θ
(
m
.
stox
m
.
fuel
)
2
(
ρ
fuel
ρ
stox
)
(
A
fuel
A
stox
)
3.1
≤
7
Eq
.
(
I
)
where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage, and
wherein the angle (θ) is not equal to 30°.
11 . The gasification reactor system as recited in claim 10 , including a reactor vessel adjacent the first face of the injector mixer.
12 . The gasification reactor system as recited in claim 10 , including a feed source operable to provide the coal to the injector mixer.
13 . The gasification reactor system as recited in claim 12 , including a feed line connecting the feed source and the injector mixer.
14 . The gasification reactor system as recited in claim 13 , including a flow splitter within the feed line that is operable to divide flow through the feed line into separate flow streams.
15 . The gasification reactor system as recited in claim 12 , including a pump operable to move the fuel material reactant.
16 . A method of maintaining mixing efficiency between reactants injected through an injector mixer comprising an injector body that extends between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle (θ) with the first axis, the method comprising:
establishing gasification parameter variables {dot over (m)} stox , {dot over (m)} fuel , ρ stox , ρ fuel , A fuel and A stox to satisfy mixing efficiency Equation (I):
2
≤
2
sin
θ
(
m
.
stox
m
.
fuel
)
2
(
ρ
fuel
ρ
stox
)
(
A
fuel
A
stox
)
3.1
≤
7
Eq
.
(
I
)
where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage, and
wherein the angle (θ) is not equal to 30°.
17 . The method as recited in claim 16 , wherein the at least one second passage of the injector mixer includes four second passages that are circumferentially arranged around the first passage.
18 . The method as recited in claim 16 , including establishing the angle to be less than 30°.
19 . The method as recited in claim 16 , including establishing a point in space beyond the first face of the injector mixer at which the first axis and the second axes intersect, and establishing the point to be at a distance of greater than 1.94 inches/4.93 centimeters from the first face.
20 . The method as recited in claim 16 , including establishing the area ratio A fuel /A stox to be from 1 to 2.
21 . The method as recited in claim 16 , including establishing a cold gas efficiency of at least 80%.
22 . The method as recited in claim 16 , including establishing a cold gas efficiency of at least 90%.
23 . The method as recited in claim 16 , including establishing a cold gas efficiency of at least 92%.
24 . The method as recited in claim 16 , including establishing a cold gas efficiency of 95%.
25 . A method of establishing a targeted mixing efficiency between reactants injected through an injector mixer comprising an injector body that extends between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle (θ) with the first axis, the method comprising:
establishing gasification parameter variables {dot over (m)} stox , {dot over (m)} fuel , ρ stox , ρ fuel , A fuel and A stox ; and
adjusting at least one of the gasification parameter variables to satisfy mixing efficiency Equation (I):
2
≤
2
sin
θ
(
m
.
stox
m
.
fuel
)
2
(
ρ
fuel
ρ
stox
)
(
A
fuel
A
stox
)
3.1
≤
7
Eq
.
(
I
)
where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage, and
wherein the angle (θ) is not equal to 30°.
26 . The method as recited in claim 25 , including adjusting at least one of A fuel and A stox to satisfy mixing efficiency Equation (I).
27 . An injector mixer for a gasification reactor system, the injector mixer comprising:
an injector body extending between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle (θ 1 ) with the first axis, and at least one third, impinging passage extending between the first face and the second face and having an associated third axis that has an angle (θ 2 ) with the first axis that is different than angle (θ 1 ), wherein the angles (θ 1 and θ 2 ) satisfy mixing efficiency Equation (I):
2
≤
2
sin
θ
(
m
.
stox
m
.
fuel
)
2
(
ρ
fuel
ρ
stox
)
(
A
fuel
A
stox
)
3.1
≤
7
Eq
.
(
I
)
where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of a stream of the fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage; and
wherein the angle (θ) is not equal to 30°.Join the waitlist — get patent alerts
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